on the trunk space
No, trunk space is not a reason to buy a convertible. However, it does play a significant factor in the decision to buy one. My rule is simple: there must be enough room for a lady and I to take a 4-day weekend trip with luggage.
This means a medium-size luggage and maybe some small duffels. The current Z4 offers a more-than-adequate trunk for this purpose, the 2009+... who knows?
* ED 12 BMW 135 'vert. Le Mans Blue on Oyster Lthr
H-D Night Rod Special Sedona Orange ABS
07 Ducati SportClassic GT 1000, Red w/ Termis
09 BMW 135i 'vert Jet Blk/Beige Lthr
07 Z4 3.0si. Jet Blk/Saddle Brwn Ext Lthr
03 Toyota Matrix XRS. Blk w/grey
04 Kawasaki Vulcan 500, Red
01 BMW 325 4dr. Titanium Silver, Blk Lthr
94 325 'vert. Blk w/ Tan Lthr
90 325iX Sedan. Diamond Blk w/ Blk Lthr
All manual transmission